Abstract
In a single-mode fiber, the birefringence introduced by lateral internal stress caused by bending is evaluated from the measurement of the frequency shift of anti-Stokes light generated by stimulated four-photon mixing. The birefringence as a function of bending curvature is measured at a pump wavelength of 1.06 μm. Bending-induced birefringence of 7 × 10−5, which corresponds to a frequency shift of 1060 cm−1, is found to be introduced by a bending curvature of 2.8 mm. Experimental results are in good agreement with theoretical predictions.
© 1985 Optical Society of America
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